error[E0453]: warn(unsafe_code) incompatible with previous forbid
  --> $DIR/forbid-macro-with-deny.rs:34:5
   |
LL | #![forbid(unsafe_code)]
   |           ----------- `forbid` level set here
...
LL |     warn_macro::emit_warn! {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
   |
   = note: this error originates in the macro `warn_macro::emit_warn` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0453]: warn(unsafe_code) incompatible with previous forbid
  --> $DIR/forbid-macro-with-deny.rs:34:5
   |
LL | #![forbid(unsafe_code)]
   |           ----------- `forbid` level set here
...
LL |     warn_macro::emit_warn! {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
   = note: this error originates in the macro `warn_macro::emit_warn` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0453`.